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CVE-2019-15031

Description

In the Linux kernel through 5.2.14 on the powerpc platform, a local user can read vector registers of other users' processes via an interrupt. To exploit the venerability, a local user starts a transaction (via the hardware transactional memory instruction tbegin) and then accesses vector registers. At some point, the vector registers will be corrupted with the values from a different local Linux process, because MSR_TM_ACTIVE is misused in arch/powerpc/kernel/process.c.


Affected Software


CPE Name Name Version
linux:linux_kernel linux linux kernel 5.2.14
canonical:ubuntu_linux canonical ubuntu linux 12.04
canonical:ubuntu_linux canonical ubuntu linux 14.04
canonical:ubuntu_linux canonical ubuntu linux 16.04
canonical:ubuntu_linux canonical ubuntu linux 18.04
canonical:ubuntu_linux canonical ubuntu linux 19.04
opensuse:leap opensuse leap 15.0
opensuse:leap opensuse leap 15.1
redhat:enterprise_linux redhat enterprise linux 7.0
redhat:enterprise_linux redhat enterprise linux 8.0

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